Radioactive decay of {sup 80}Y and low-lying states in {sup 80}Sr

Journal Article · Fri Jan 01 04:00:00 EST 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.59.59· OSTI ID:292730

Doering, J; Aprahamian, A; de Haan, R C; Goerres, J; Schatz, H; Wiescher, M ^[1]; Walters, W B; Seweryniak, D ^[2]; Brown, L T; Davids, C N; Lister, C J; Seweryniak, D ^[3]; Brown, L T ^[4]

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1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
2. Department of Chemistry, University of Maryland, College Park, Maryland 20742 (United States)
3. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
4. Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States)

The {beta}{sup +}/EC decay of a mass-separated {sup 80}Y source has been studied by {beta}- and {gamma}-ray spectroscopy following the bombardment of a thin {sup 24}Mg target with {sup 58}Ni ions at 190 MeV. An extended decay scheme with 14 new states in {sup 80}Sr has been identified including the first observation of negative-parity states. The low-lying positive-parity states have been found to be clustered indicating a pattern of one-, two-, and possibly three-phonon multiplets characteristic of an anharmonic vibrator. Some states in {sup 80}Sr can also be grouped into a {gamma}-vibrational band. In general the low-lying states in light strontium isotopes show vibrationlike collectivity which evolves to rotational behavior with increasing spin and decreasing neutron number. The observed {sup 80}Ythinsp{beta}-decay fragmentation and log ft values have also been used to assign spin and parity of 4{sup {minus}} and 1{sup {minus}} to the parent ground state and the 228.5 keV isomeric state, respectively. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 292730
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 59; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BETA DECAY
GAMMA SPECTRA
MAGNESIUM 24 TARGET
NICKEL 58
RADIOACTIVITY
SPIN
STRONTIUM 80
YTTRIUM 80